Nut-lock.



ALBERT E; sivrJrrH, 0F DUNKIRK, NEW YORK.

NUT-Loox To all whom t may concern l `Be it knqwr'i time I,- anefciicv SMITH, citizen: of' tliefnitdi states, residing at' Diuilirli-, the enmity of (Chautauqua, State' of New: York, hal'le i'nyer'i'ted certain new and usefiil Improvements inl N ile-Locks, of' which the following isf a ,descripticir, refer-enc'ebeing had to the ace'orpaying' dra-W- ing' and to the' gu'resof reference marked thereon. e

, The' invention relates tof new and useful improvemete in mit leaks whereinf the islockedfiom' turning relative te the bolt oni vvlri'cliit is threaded.

An object of the iiventio is to provide a nut lock having a gripping roller which `is brought into actionL When foreef'isvapplied to turnthe' nutffrom the bolt, which gripping roller iist provided4 gx-ipping'means adapted tof engage bite the' part with which it oo-act's atl any point olest.`

further oeje'et ci? the iirv'eation'- to proa/idea device of the above ellaiiaeter With means- Wliereby excessive force may bev used to release the not lock.

These and Aether objects will in part be' obvious and willy part bef hereinafiterfl more fully described?.

Figure l= bottoni planl View 0i a mit having my improved locking means ap'- plied thereto; Fig. 2 isi longitudinal sectional View through the mit showing' the same appliedto ai bolliandA in3 dottedl li-n'es the part against which dief mit is locked; Figi. 3" is a View similar to Figi@ showing the'A nut locl'iing meansgreleased by force; Flgge is a perspectivc'view of a alienating my improved le cking means applied thereto. Fig'. 5y anf enlarged detail inl perspective of the grip/ping' roller. Fig.5 ois an enlarged' detail in' 'perspective ci the retaining clip. Big? i sectiinalf View showing a modiL lied forni of the invention.

The iventicrli is directed primarily tof a nut-YV loli in= which the' ant-tive g'i'vippingv eleni'ent is roller;V This rollerl cc-acts with a f part relative tofwhiehl it4 i's desired' to pre'- vent the nut fromturningand thev roller is Caused to# grip' the said part.-

order that? the roller, While' in any position; may

Spe'ilication of Letters Patent.

Patented 0015.5; 1915. seria-'1 No'. 876,834.

atonce bite the part-Which is to beY gi'pped-- said* roller is provided with a helical grip--` ping lipl or' a plurality of helical gripping lipnasmuchas these gripping li-ps eX'iv tend in a helical path about the cylindrical silrao'e' of the rollerl noA rriait/te'V Whatu` may bei the' positiinil of the roller itf'will bei in propel?" 'gripping' Contact With the' part with which colats; In the preterable-` embodiment of the invention the Iillt is' provided* with a recess on its under 'ace for this gripping' roller and said* reoess has' iin'- clined' faee which V ca'u'ses the roller' to gri'p the paire' Withf Which it `co-'acts when! any force isy applied which' tends to turiil the" nut erably terniina'tes inf an enlarged prv rtil` irl of the recess so that when excessive or greaty pressu'r'e is?` applied to the nut said? gripping roller-v may be forced over the inclineclg shoulder' into the' enlarged reeess' and tliu's releasesj the' Y f 1 Reerring'rnore in detail to the drawings; my improved nutl'oek shown inr` Figs. `l' to' 6l includesl gripping-roller l which isA ed to'V seatin1 ieeessZ formedinL a nut This' recess 2 preferably extends fomthe' i-n'er Walli of 'thenllt tol a point adjacent' theik outer Wall but isfnotv out* through as is clearly Vshown int Figsi l andI t. This pre# vents the" roller from1 being dislodged :trom the recess' during the applying-1 of' thenu't-r to-fthebol-t.I |The nut isthreaded as isf usual andi is* adapted to engage" a threaded bolt 4. The recess' 2f has anz incl-ined surfacey 5 which extends from the enlarged portion" 6 outwardly so a's'- to forinlafshoulder `7, sa'idfre'- cess also has an enlargedr portion 8 at the' other end thereof. The roller" l as',l more' clearly shown in Fig. V5' is provided with@ gripping' lips 9,` 9. Thesegripping lipseXVL tend in a' helical path about the cylindricalV surf-ace of the roller an'dare parallel with nient of the nut causes the roller 1 to move on the nut in the recess 2 into the enlarged pocket 6. This permits the turning of the nut 8 against the part 10 which is to be clamped by the bolt and nut. lVlien'the nut is in gripping contact with the part 10 the roller also lightly grips said part. Any tendency on the part of the nut to. turn off from the bolt which, of course, is held from turning` relative to the part 10, will cause the roller 1 to run up the incline 5 and grip the part 10 so as to prevent turning of the nut. As above noted the gripping lips extend in a helical path about the circumference of the cylindrical surface of the gripping roller 1, and, therefore, no matter what position said roller may rest in, it will at once grip into part 10 and prevent the nut from turning on the bolt,

I am aware that it is old to provide a gripping roller which is hexagonal in cross section thus forming gripping lips extending parallel to the axis of the roller,v such a cross sectional structure has ilat faces and it is found in practice that a flat face will engage the co-acting surface and the gripping lips will not turn so as to grip into said surface. By my improved arrangement of the gripping lips where the same eX- tends in a helical path about the cylindrical surface of the roller there is no flat surface whatever which can engage co-acting parts but on the contrary the gripping lips are at all times in engagement with said parts and ready to bite into the same. As clearl7 shown in Figs. 2 and 3, if excessive force be applied to the nut, as the use of a' wrench or the like, said roller may be forced over the shoulder 7 into the enlarged pocket 8 which is even larger than the pocket 6 and allows the roller to entirely release the part which is gripped and thus permits the nut to be turned from the bolt. I have also provided means for holding the gripping roller in the recess to facilitate the handling of the nut and the threading of the same on the bolt. As herein shown said means consists of a retaining clip 11. Said nut has an annular recess 12 formed therein, one face of which is under cut as at 13, said retaining clip has a beveled edge` 11 which engages said under-cut portion 18. holds the retaining clip 11 in the recess 12 but permits free endwise movement on the same. Saidclip is in the form of ran annulus with a section cut out providing spaced ends 15 and 16. The space between the ends 15 and 16 is slightly less than the diameter of the roller 1. This clip holds the roller in the recess but as the clip is free to moveendwise it permits the roller to climbV the incline and to move over into the enlarged pocket 8. j

In Fig. 7 I have shown a slightly modi- This fied form of the invention wherein the recess 17 for the roller l is formed in the body of the bolt 18 and is adapted to engage the inner threaded wall of the nut 19, said roller may be inserted after the nut is threaded on the bolt and will serve to lock the bolt and nut together in the manner above described.

1t is obvious that minor changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described my invention what l claim as new and desire to secure by Letters Patent is:

1. The combination of a threaded nut, a threaded bolt, and a nut lock therefor, including a roller housed in a recess in one of said parts and adapted to prevent the nut from turning relative to the bolt, said roller having a helicalbiting lip formed thereon.

2. The combination of a threaded nut, a threaded bolt and a nut lock therefor, including a roller housed in a recess formed in the inner face of the nut, said recess having an inclined inner wall on which said roller is adapted to rest, said roller having a plurality of parallel gripping lips extending in a helical path about the cylindrical surface of said roller.

3. The combination of a threaded nut, a threaded bolt and a nut lock therefor, including a roller housed in a recess formed in the inner face of the nut, said recess having an inclined inner wall on which said roller is adapted to rest, said roller having a plurality of parallel gripping lips extending in a helical path about the cylindrical surface of said roller, said recess for the roller in said inclined inner face having an enlarged pocket adapted to receivel said gripping roller when the same is forced over the shoulder formed by said inclined Y surface.

4. The combination of a threaded nut, a threaded bolt and a nut lock therefor, including a roller housed in a recess formed in the inner face of the nut, said recess having an inclined inner wall on which said roller is adapted to rest, said roller having a plurality of parallel gripping lips extending in a helical path about the cylindrical surface of said roller, and means for retaining said gripping roller in said recess, said means being so constructed as to permit the roller to freely move along the inclined surface of said recess.

5. The combination of a threaded nut, a threaded bolt and a nut lock therefor, including a roller housed in a recess formed in the inner face of the nut, said recess having an inclined inner wall on which said roller is adapted to rest, said roller having a plurality of parallel gripping lips extending in a helical path about the Cylindricall surface of said roller, said nut having an annular groove formed in the inner face thereof, retaining clip located in said groove and adapteclto move endwise therein, said clip serving to hold said gripping roller in said recess.

ture, in the presence of two Witnesses.

ALBERT E. SMITH.

Witnesses:

MADELINE TUCKER, ROLLIN W. SNOW.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of llafcentsA Washington. D. C."

In testimony vvhereo I aix my signa- 

